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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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相关实验视频

Updated: Jun 30, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

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一种基于激光的多功能设备,用于具有微尺度空间分辨率的时间分辨率ARPES.

S K Y Dufresne1,2, S Zhdanovich1,2, M Michiardi1,2

  • 1Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.

The Review of scientific instruments
|March 22, 2024
PubMed
概括

我们开发了一种多功能时间解析的微型ARPES系统,用于研究具有挑战性的材料中的超快电子动态. 这种先进的技术提供了高的空间,能量和时间分辨率,使得脱皮和不均样品的详细分析.

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Measurement of Tension Release During Laser Induced Axon Lesion to Evaluate Axonal Adhesion to the Substrate at Piconewton and Millisecond Resolution
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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
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Measurement of Tension Release During Laser Induced Axon Lesion to Evaluate Axonal Adhesion to the Substrate at Piconewton and Millisecond Resolution
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科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 材料科学 材料科学 材料科学
  • 频谱学是一种光谱学.

背景情况:

  • 了解电子动态对于新型材料的应用至关重要.
  • 现有的技术往往缺乏用于不均或微尺度样本的空间分辨率.

研究的目的:

  • 开发一款用于时间解析的微型ARPES的多功能设备.
  • 为了能够研究微米空间分辨率的脱皮和不均材料中的超快电子动态.

主要方法:

  • 开发一个基于6.2 eV激光的时间解析微型ARPES系统.
  • 实现可调节的空间分辨率低至11μm.
  • 结合高能 (~11 meV) 和时间 (~280 fs) 分辨率.

主要成果:

  • 通过分析Bi2Se3拓表面状态的光谱扩展来证明系统性能.
  • 与探测器脉冲空间维度相关的光谱扩展和解决的不均质贡献.
  • 在现场脱皮后,成功地在~30μm的WTe2片上进行了时间解析的微ARPES.

结论:

  • 开发的时间解析微型ARPES系统对于研究超快电子动态是有效的.
  • 该系统为微剥皮材料提供了动量分辨率的洞察力.
  • 能够对复杂和纳米级材料中的电子行为进行详细研究.